From: Rick DeNatale <rick.denatale@...>
Date: 2006-08-11T09:29:18+09:00
Subject: Re: Overriding String#[]

On 8/10/06, Lukasz Muziol <wookie2@o2.pl> wrote:
> The generic question would be "does anyone know a decent and complete
> reference to Ruby's syntax?"
>
> What interests me is the syntax required to define methods like [], []=,
> getting their parameters in between the braces. It's fairly
> inconvienient that String#[] returns a character code, rather than a
> string of one character. Hope it'll get changed soon (to get in line
> with POLS perhaps :)), accomodating my laziness for now I hope to
> override it. How do I define a function named like this?

Well the syntax is:

class String
   def [](arg)
    end
end

But, this one seems like a pretty dangerous mod to me, with the
potential to break lots of things.

But, keep in mind that while:

irb(main):001:0> "abc"[1]
=> 98

you can get the result you want without changing Strings [] method.

irb(main):002:0> "abc"[1..1]
=> "b"

-- 
Rick DeNatale
http://talklikeaduck.denhaven2.com/